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ELECTRODE FOR SECONDARY BATTERIES.

No. 279,346. Patented June 12; 1883.

SBE 'I v Czn ATTORNEYS;

NITED STATES PATENT OFFIC NORMAN t. (OOKSON, OF NEVOASTLE-UP()N-TYNE, (OUXlY OF XORTHUM BERTJAND, EXGLAND.

ELECTRODE FOR SECONDARY BATTERIES part of Letters Patent No. 279,346, dated June 12, 1883. Application filed October 12, 1882. (No model.)

it SPECIFICATION forming To all whom, it may concern.-

Be it known that I, NORMAN CHARLES (oon'som ot' Newcastle-upon-Tync, in the county of 'Nortluunberland, England, have invented a new and useful lliipi'ovement in Electrodes for Secondary Batteries, of which the following is afull, clear, and exact deseriplion.

Reference is to be had to the accompanying 1o drawings, forming part of this specification, in

which similar lcttcrs of reference in di eate corresponding parts inall the figures. I

Figure 1 is ascetional side elevation of the apparatus used in the manufacture of my im proved plates. Fig. 2 is an end view of the discharge-pipe, enlarged. Fig. 3 is a side elevation of the layer of coiled wires for one of my improved plates. Fig. 4 is a sectional elevation of one of the plates.

The invention consists in combining a folded layer of fine leaden wire with a perforated l eaden sheet having a tongue, so that the tongue and wire end or ends will be brought together and form a pole, as hereinafter described.

A represents a vessel set in a furnace, 3, or exposed in any suitable manner to such a heat as will melt the lead placed in the said vessel and maintain it in a melted condition, the said heat-applying pparatus being so con- 0 structed as to allow the heat to be regulated to keep the lead at a uniform temperature. I prefer to use a vessel of such a depth as will contain a considerable quantity of lead for the double purpose of keeping the lead at a 3 5 more uniform temperature, and to cause the lead to exert a considerable pressure upon the bottom of the said vessel.

In or near the bottom of the vessel A are formed one or more apertures, in which are 40 secured the upper ends of one or more pipes, O. The lower ends of the pipes C are closed, and in the said closed ends are formed a number of small perforations, .asillustrated in Fig. 2, through which the lead is forcedin 4 5 small streams by the weight of the lead in the vessel A. The streams of lead are solidified as they enter the air, so as to form groups of fine lead wires, D, which are received upon and coiled around a drum, E, rotated by hand or by suitable mechanism at a speed equal to the velocity at which the lead escapes from the perforations in the closed end of the pipe C.

if desired, the streams of load can be discharged into water or other cooling fluid; but 1 prefer to discharge them into the air,.as pro- 5 5 dncing a better-effect.

,l f desired, the discharge perforations can be formed in the body of the vessel A; but I prefer to use the pipe asbeing more convenientr The pipe 0 is provided with a plug, F, passing through a screw-hole in the arm G, attached to the vessel A, or other suitable support, so that thesaid pipe (.3 can be closed and the out-flow of the lead stopped when de sired; or the pipe (3 can be provided at any desired point of its length with a stop-cock or other suitable means for stopping the outflow of the lead. \Vhen a number-of pipes, G, are used, they can be so arranged that the streams of lead will cross each other, so as to form a net-work or fabric of fine lead wire, which fabriccan be received upon a drum in the manner hereinafter described. The lead wire 1') thus formed is unwound from the drum E, is coiled or folded into a'iayer, and is'secured 7 together by being attached to a single plate of sheet-lead, H, or interposed between two plates of sheet-lead, H, or by being inserted in the- .fol d of a plate of sheet-lead bent into U shape, or by strips of shcet-lead, which plates of sheet-lead should be perforated with niu'nerous holes to allow the battery-liquid to pass through freely. One or both ends of the lead wires 1) and a tongue or strip of the plate H are brought together to form a pole of the bat- 8 5 ter-y. Plates thus formed will expose a very of the electric large lead surface to the action current. The layer of lcadwirc can also be formed by slipping the coil of wires D from the drum E and attaching it to the sheet-lead plate or plates. The layer of lead wires can be consolidated or packed, before being attached to the sheet-lead, by pressure between rolls or by other suitable means.

I am aware thatis not new to form an electrode of straight leaden strips alternatingwith corrugated or plaited strips, said strips being held by a surroundingthicker strip and rub ber rings, or to connect the wires of an electric generator with one or more pairs of lcaden 100 plates having perforations filled with granfilefs leadenisheet, pfemlidedwitl a tongue, the! of chemically pure lead, said leaden plates besaid tongue and end 61- ends of the wire being 10 mg se mated-by non-conducting material and \brought together t0-f0rm a pole, as described.

placed in a bath of acidulcted water; but' 5 "What I claim ashew and of my invention is- \Vitnesses:

In secondaryvbatteries, @0011 or folded layer GEO. 1YI. SMOOT, 0f fine leaden wire, combined with a perforated EDWARD HILL.

NORMAN CHARLES) COOKSON. e I 

